JPH0669122B2 - Wideband transmission line antenna - Google Patents
Wideband transmission line antennaInfo
- Publication number
- JPH0669122B2 JPH0669122B2 JP16269084A JP16269084A JPH0669122B2 JP H0669122 B2 JPH0669122 B2 JP H0669122B2 JP 16269084 A JP16269084 A JP 16269084A JP 16269084 A JP16269084 A JP 16269084A JP H0669122 B2 JPH0669122 B2 JP H0669122B2
- Authority
- JP
- Japan
- Prior art keywords
- plate
- conductor
- conductor element
- antenna
- additional
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
- H01Q9/04—Resonant antennas
- H01Q9/0407—Substantially flat resonant element parallel to ground plane, e.g. patch antenna
- H01Q9/0414—Substantially flat resonant element parallel to ground plane, e.g. patch antenna in a stacked or folded configuration
Landscapes
- Waveguide Aerials (AREA)
Description
【発明の詳細な説明】 発明の属する技術分野 本発明は、伝送線路アンテナに関し、特に小形広帯域な
伝送線路アンテナの構造に関する。Description: TECHNICAL FIELD The present invention relates to a transmission line antenna, and more particularly to a structure of a small and wideband transmission line antenna.
従来技術 従来の伝送線路アンテナは、第７図（Ａ）に示すような
逆Ｌ形アンテナ、または同図（Ｂ）に示すような変形逆
Ｌ形アンテナ（アンテナ形状から逆Ｆ形アンテナと称す
る）等が一般に知られている（Ronold King,C.W.Harris
on, and D.H.Denton“Transmission-Line Missile Ante
nnas",IRE Trans.,Ant. ＆ Propa.,Jan.,90-93（1960）
参照）。同図（Ａ）は、１／４波長ホイツプアンテナを
折曲げたものであり、線状の放射導体素子２が接地導体
板１上に平行に配置され、その基部を折曲げて同軸給電
線３に接続する。このアンテナの共振周波数は、放射導
体素子２の長さと、接地導体板１との間隔によってほぼ
決定されるため、アンテナを小形に形成することが困難
であるという欠点がある。同図（Ｂ）は、放射導体素子
２の端部を短絡ピン４によつて接地し、給電線のインピ
ーダンスと接合する点に同軸給電線３を接続してオフセ
ット終電するようにしたものである。この場合も共振周
波数は放射導体素子２の長さと接地導体板１との距離に
よつてほぼ決定されるから、前述と同様の欠点を有す
る。2. Description of the Related Art A conventional transmission line antenna is an inverted L-shaped antenna as shown in FIG. 7 (A) or a modified inverted L-shaped antenna as shown in FIG. 7 (B) (referred to as an inverted F-shaped antenna from the antenna shape). Etc. are generally known (Ronold King, CWHarris
on, and DHDenton “Transmission-Line Missile Ante
nnas ", IRE Trans., Ant. & Propa., Jan., 90-93 (1960)
reference). FIG. 1A shows a bent 1/4 wavelength whip antenna, in which a linear radiating conductor element 2 is arranged in parallel on a ground conductor plate 1 and its base is bent to form a coaxial feed line 3. Connecting. Since the resonance frequency of the antenna is substantially determined by the length of the radiating conductor element 2 and the distance between the antenna and the ground conductor plate 1, it is difficult to form the antenna in a small size. In the same figure (B), the end of the radiating conductor element 2 is grounded by the short-circuit pin 4, and the coaxial feed line 3 is connected to the point where it joins with the impedance of the feed line so as to complete the offset termination. . In this case as well, the resonance frequency is substantially determined by the length of the radiating conductor element 2 and the distance between the radiating conductor element 2 and the ground conductor plate 1, and therefore has the same drawbacks as described above.
第８図は、放射導体素子２′をl1×l2の板状の導体で構
成し、これを支持台11によつて接地導体板１状に高さｈ
に保持したアンテナがあり、l1＋l2λ／４（λは波
長）で共振するようにしたものである。これは、放射導
体素子２′の長さを小とすることが可能で、小形化が容
易であり、低姿勢で実用性の高いものである。しかし、
このアンテナの帯域幅は、放射導体素子２′と接地導体
板１との距離ｈに比例するため、広帯域なアンテナを実
現するためには、放射導体素子２′と接地導体板１の距
離（アンテナ高ｈ）を大きくする必要があり、低姿勢な
アンテナであるという利点が損なわれる欠点がある。In FIG. 8, the radiating conductor element 2 ′ is composed of a plate-shaped conductor of l 1 × l 2 , and the height h of the radiating conductor element 2 is formed on the ground conductor plate 1 by means of the support 11.
There is an antenna held in the antenna, and it resonates at l 1 + l 2 λ / 4 (λ is the wavelength). This is because the radiating conductor element 2'can be made small in length, can be easily miniaturized, and has a low posture and is highly practical. But,
Since the bandwidth of this antenna is proportional to the distance h between the radiating conductor element 2'and the ground conductor plate 1, in order to realize a wideband antenna, the distance between the radiating conductor element 2'and the ground conductor plate 1 (antenna It is necessary to increase the height h), and there is a drawback that the advantage of the low profile antenna is lost.
この欠点を補うため、第９図に示すような、複共振形の
アンテナが使用される。これは、２枚の板状放射導体素
子12と12′を誘電体板６を介して平行に対向させて接地
導体板１状に配置し、その一端部を短絡ピン４によつて
接地導体板１に短絡し、板状放射導体素子12と12′の一
辺を短絡板５によつて短絡し、該短絡板５上の給電点に
同軸給電線３の給電線７を接続して給電するようにして
いる。このアンテナは、２つの板状放射導体素子12と1
2′によつて複共振形のアンテナとして動作し、等価的
に広帯域なアンテナを提供することが可能である。この
アンテナは、板状放射導体素子12,12′と接地導体板１
との間隔が波長に比して非常に小さいため、給電線７に
よる微少モノポールモードと、板状放射導体素子12また
は12′と接地導体板１とで形成されるスロツトモードが
存在すると考えられるが、板状放射導体素子12′と接地
導体板１とのスロツトモードの開口面の１部が、短絡板
５によつて閉じられているため、板状放射導体素子12に
よる放射特性と、板状放射導体素子12′による放射特性
のアンテナ利得に差が生じるという重大な欠点がある。
従つて、複共振特性によつてインピーダンス的には広帯
域アンテナとして動作することができるが、放射特性と
しては、広帯域アンテナとして充分に動作することがで
きないという欠点がある。In order to compensate for this drawback, a multi-resonance type antenna as shown in FIG. 9 is used. In this configuration, two plate-shaped radiating conductor elements 12 and 12 'are arranged parallel to each other with a dielectric plate 6 in between and arranged in a ground conductor plate 1, and one end of the radiating conductor elements 12 and 12' is grounded by a short-circuit pin 4. 1 to short-circuit one side of the plate-shaped radiating conductor elements 12 and 12 'by the short-circuit plate 5, and connect the power-supply line 7 of the coaxial power-supply line 3 to the power-supply point on the short-circuit plate 5 to supply power. I have to. This antenna has two plate-shaped radiating conductor elements 12 and 1.
2'behaves as a multi-resonance type antenna, and it is possible to provide an equivalent broadband antenna. This antenna comprises plate-shaped radiating conductor elements 12 and 12 'and a ground conductor plate 1.
It is considered that there is a minute monopole mode due to the power supply line 7 and a slot mode formed by the plate-shaped radiating conductor element 12 or 12 'and the ground conductor plate 1 because the distance between and is very small compared to the wavelength. Since a part of the slot mode opening surface between the plate-shaped radiating conductor element 12 ′ and the grounding conductor plate 1 is closed by the short-circuit plate 5, the radiating characteristic of the plate-like radiating conductor element 12 and the plate-like radiating There is a serious drawback in that there is a difference in the antenna gain of the radiation characteristic due to the conductor element 12 '.
Therefore, the multi-resonance characteristic allows the antenna to operate as a broadband antenna in terms of impedance, but the radiation characteristic has a drawback that it cannot sufficiently operate as a broadband antenna.
発明の目的 本発明の目的は、上述の従来の欠点を解決し、小形低姿
勢の広帯域伝送線路アンテナを提供することにある。OBJECT OF THE INVENTION It is an object of the present invention to solve the above-mentioned drawbacks of the prior art and to provide a compact low profile wideband transmission line antenna.
発明の構成 本発明の広帯域伝送線路アンテナは、接地導体板に一定
間隔で対向して配置された板状放射導体素子と、該板状
放射導体素子の周辺部の一点を接地導体に接続する短絡
ピンを備え、前記放射導体素子に一定間隔で対向して配
置された付加導体板と、該付加導体板の周辺部の１点を
対向する前記板状放射導体素子の１点に接続する短絡導
体とを備えて、前記板状放射導体素子または付加導体板
のいずれか一方に給電するように構成したことを特徴と
する。The wideband transmission line antenna of the present invention includes a plate-shaped radiating conductor element arranged facing a ground conductor plate at regular intervals, and a short-circuit for connecting a point on the peripheral portion of the plate-shaped radiating conductor element to a ground conductor. An additional conductor plate which is provided with a pin and is arranged to face the radiation conductor element at regular intervals, and a short-circuit conductor which connects one point on the peripheral portion of the additional conductor plate to one point of the plate radiation conductor element which faces the radiation conductor element. And is configured to supply power to either the plate-shaped radiation conductor element or the additional conductor plate.
発明の実施例 次に、本発明について、図面を参照して詳細に説明す
る。Embodiments of the Invention Next, the present invention will be described in detail with reference to the drawings.
第１図は、本発明の第１の実施例を示す斜視図である。
すなわち、接地導体板１に一定間隔h1で平行に配置され
た板状放射導体素子12と、板状放射導体素子12の周辺部
の一点（図では角部）を接地導体１に接続する短絡ピン
４と、板状放射導体素子12の給電点８に接続された給電
線３と、前記放射導体素子12に一定間隔で対向して配置
された付加導体板９と、該付加導体板９の周辺部の１点
を対向する板状放射導体素子12の１点に接続する短絡導
体10とから構成される。FIG. 1 is a perspective view showing a first embodiment of the present invention.
That is, a plate-shaped radiating conductor element 12 arranged in parallel to the ground conductor plate 1 at a constant interval h 1 and a short-circuit connecting one point (corner in the figure) at the peripheral portion of the plate-like radiating conductor element 12 to the ground conductor 1. The pin 4, the feeding line 3 connected to the feeding point 8 of the plate-shaped radiating conductor element 12, the additional conductor plate 9 facing the radiating conductor element 12 at regular intervals, and the additional conductor plate 9 It is composed of a short-circuit conductor 10 that connects one point on the peripheral portion to one point on the opposing plate-shaped radiation conductor element 12.
次に、本実施例の動作について説明する。先ず同軸給電
線３から板状放射導体素子12の給電点８に給電されて板
状放射導体素子12が励振されて板状放射導体素子２の周
縁部に電流が流れ、周縁部上の１点の電位より短絡導体
10を介してさらに付加導体板９に給電され、付加導体板
９も放射素子として動作する。これにより付加導体板９
と板状放射導体素子12がスタガ的に動作してインピーダ
ンス特性の広帯域化を図ることができる。ここで、短絡
ピンおよび短絡導体および給電点の位置は、アンテナの
インピーダンスと給電線のインピーダンスが整合するよ
う決定する。第２図の曲線13は、板状放射導体素子12の
大きさをl1×l2＝30mm×47.5mmとし接地導体板１からの
高さh1を5mmとし、付加導体板９の大きさをl3×l4＝30m
m×41.5mmとし、高さh2＝10mmとした場合のリターンロ
ス特性を示す。同図に破線14によつて示した特性は、付
加導体板９のない（第８図のような）従来のアンテナを
高さｈ＝10mmとした場合のリターンロス特性である。図
中横軸は、中心周波数f0に対する測定周波数の比率を示
す。曲線13と14を比較すれば、本実施例は広い範囲に亘
って充分大きなリターンロスが得られることが理解され
る。Next, the operation of this embodiment will be described. First, power is fed from the coaxial feed line 3 to the feeding point 8 of the plate-like radiating conductor element 12 to excite the plate-like radiating conductor element 12 so that a current flows in the peripheral portion of the plate-like radiating conductor element 2 and one point on the peripheral portion is provided. Shorter conductor than the potential of
Power is further supplied to the additional conductor plate 9 via 10, and the additional conductor plate 9 also operates as a radiating element. As a result, the additional conductor plate 9
Thus, the plate-shaped radiating conductor element 12 operates in a staggered manner, so that the impedance characteristic can be broadened. Here, the positions of the short-circuit pin, the short-circuit conductor, and the feeding point are determined so that the impedance of the antenna and the impedance of the feeding line match. The curve 13 in FIG. 2 shows that the size of the plate-shaped radiating conductor element 12 is l 1 × l 2 = 30 mm × 47.5 mm, the height h 1 from the grounding conductor plate 1 is 5 mm, and the size of the additional conductor plate 9 is L 3 × l 4 = 30m
The following shows the return loss characteristics when m x 41.5 mm and height h 2 = 10 mm. The characteristic shown by the broken line 14 in the same figure is the return loss characteristic when the height h = 10 mm of the conventional antenna without the additional conductor plate 9 (as in FIG. 8). The horizontal axis in the figure represents the ratio of the measured frequency to the center frequency f 0 . By comparing the curves 13 and 14, it is understood that this embodiment can obtain a sufficiently large return loss over a wide range.
第３図の曲線15は、本実施例の利得周波数特性を示す。
点線の曲線16は、付加導体板９を持たない（第８図に示
すような）板状伝送線路アンテナの利得特性であり、曲
線17は、第９図に示すような従来のアンテナの利得特性
を示す。同図において、縦軸は、ダイポールアンテナを
基準アンテナとした場合の相対利得（dB）を示し、横軸
は、中心周波数f0で規格化した周波数で示している。本
実施例のアンテナは、従来のいずれの形のアンテナより
も広帯域に亘る高利得特性を有する。A curve 15 in FIG. 3 shows the gain frequency characteristic of this embodiment.
A dotted curve 16 is a gain characteristic of a plate-shaped transmission line antenna having no additional conductor plate 9 (as shown in FIG. 8), and a curve 17 is a gain characteristic of a conventional antenna as shown in FIG. Indicates. In the figure, the vertical axis shows the relative gain (dB) when the dipole antenna is used as the reference antenna, and the horizontal axis shows the frequency normalized by the center frequency f 0 . The antenna of this embodiment has a high gain characteristic over a wider band than any conventional antenna.
本実施例は、短絡導体10の構造寸法が小さく、付加導体
板９によるスロツトモードの開口面の大きさを、板状放
射導体素子12と接地導体板１で形成されるスロツトモー
ドの開口面の大きさと同等にすることができるため、上
述のように、放射特性の広帯域化が容易に達成されると
いう効果がある。In this embodiment, the structure size of the short-circuit conductor 10 is small, and the size of the slot mode opening surface by the additional conductor plate 9 is the same as the size of the slot mode opening surface formed by the plate-shaped radiating conductor element 12 and the ground conductor plate 1. Since they can be made equal, there is an effect that the broadening of the radiation characteristic can be easily achieved as described above.
第４図は、本発明の第２の実施例を示す斜視図である。
この場合は、付加導体板9,板状放射導体素子12と接地導
体板１等の間に誘電体18を介在させることによつて、ア
ンテナ寸法を短縮している。同図（Ａ）は、付加導体板
９と板状放射導体素子12の間に誘電体18を充填したもの
であり、同図（Ｂ）は、板状放射導体素子12と接地導体
板１の間に誘電体18を介在させたものであり、同図
（Ｃ）は、いずれの間にも誘電体18を充填したものであ
る。誘電体充填によつてアンテナ上の波長を短くし、ア
ンテナ寸法が短縮されると共に、付加導体板9,板状放射
導体素子12等を強固に接地導体板１に固定することがで
きるという効果がある。FIG. 4 is a perspective view showing a second embodiment of the present invention.
In this case, the size of the antenna is shortened by interposing the dielectric 18 between the additional conductor plate 9, the plate-shaped radiating conductor element 12 and the ground conductor plate 1. 1A shows a dielectric 18 filled between the additional conductor plate 9 and the plate-shaped radiation conductor element 12, and FIG. 1B shows the plate-shaped radiation conductor element 12 and the ground conductor plate 1. The dielectric 18 is interposed between them, and FIG. 7C shows that the dielectric 18 is filled in any space. Due to the dielectric filling, the wavelength on the antenna can be shortened, the antenna size can be shortened, and the additional conductor plate 9, the plate-shaped radiating conductor element 12 and the like can be firmly fixed to the ground conductor plate 1. is there.
第５図は、本発明の第３の実施例を示す斜視図で、付加
導体板9,板状放射導体素子12等に切込みを入れて、これ
らの導体板の周波長を増加させることによつてアンテナ
寸法を短縮したものである。同図（Ａ）は、付加導体板
９のみに切込みを入れたアンテナを示し、同図（Ｂ）は
板状放射導体素子12のみに切込みを入れたものを示す。
双方に切込みを入れてもよいことは勿論である。FIG. 5 is a perspective view showing a third embodiment of the present invention, in which a cut is made in the additional conductor plate 9, the plate-shaped radiating conductor element 12, etc. to increase the peripheral wavelength of these conductor plates. The antenna dimensions are shortened. The figure (A) shows the antenna in which only the additional conductor plate 9 is cut, and the figure (B) shows the one in which only the plate-shaped radiating conductor element 12 is cut.
Of course, both sides may be cut.
第６図は、本発明の第４の実施例を示す斜視図である。
この場合は、付加導体板９および板状放射導体素子12の
角部に切込みを入れ、その切込み部を曲折して短絡導体
10または短絡ピン４としたものである。製造および組立
てが容易で、付加導体板９および板状放射導体素子12の
保持強度が増大するという利点がある。FIG. 6 is a perspective view showing a fourth embodiment of the present invention.
In this case, cuts are made in the corners of the additional conductor plate 9 and the plate-shaped radiating conductor element 12, and the cuts are bent to form a short-circuit conductor.
10 or short-circuit pin 4. It has advantages that it is easy to manufacture and assemble, and the holding strength of the additional conductor plate 9 and the plate-shaped radiating conductor element 12 is increased.
なお、上記いずれの実施例においても、無線機等の金属
製筐体を接地導体板として使用することができることは
いうまでもない。また、上記いずれの実施例において
も、板状放射素子ではなく付加導体板に給電しても、短
絡導体を介して板状導体素子に給電されるから、同様の
効果が得られることはいうまでもない。In any of the above-mentioned embodiments, it goes without saying that a metal casing such as a radio can be used as the ground conductor plate. In addition, in any of the above-mentioned embodiments, even if power is supplied to the additional conductor plate instead of the plate radiating element, since power is supplied to the plate conductor element via the short-circuit conductor, similar effects can be obtained. Nor.
発明の効果 以上のように、本発明においては、付加導体板と板状放
射導体素子を一定間隔で接地導体板に平行に配置し、板
状放射導体素子の周辺部の一点を短絡ピンによつて接地
し、板状放射導体素子（または付加導体板）の周縁部の
１点に給電し、板状放射導体素子（または付加導体板）
の周縁部の１点から短絡導体を介して付加導体板（また
は板状放射導体素子）に間接的に給電するように構成し
たから、付加導体板のスロツトモードの開口面を閉じな
いで、広帯域特性が得られるという効果がある。小形、
かつ低姿勢な広帯域伝送線路アンテナを必要とする携帯
無線機、例えば800MHz帯自動車電話方式等における着脱
自在な携帯形移動無線機等のアンテナとして使用すれば
極めて有効である。As described above, in the present invention, the additional conductor plate and the plate-shaped radiating conductor element are arranged at a constant interval in parallel with the ground conductor plate, and one point of the peripheral portion of the plate-like radiating conductor element is connected by the shorting pin. Ground, and power is supplied to one point on the peripheral edge of the plate-shaped radiating conductor element (or additional conductor plate), and the plate-shaped radiating conductor element (or additional conductor plate).
Since the power is indirectly supplied to the additional conductor plate (or plate-shaped radiating conductor element) from one point on the peripheral edge of the additional conductor plate via the short-circuit conductor, the broadband characteristics can be achieved without closing the slot mode opening surface of the additional conductor plate. Is obtained. Small,
Moreover, it is extremely effective when used as an antenna of a portable wireless device requiring a low profile wide band transmission line antenna, for example, a detachable portable mobile wireless device in an 800 MHz band car telephone system or the like.
第１図は本発明の第１の実施例を示す斜視図、第２図は
上記実施例のリターンロス特性を示す図、第３図は上記
実施例の利得特性を示す図、第４図は本発明の第２の実
施例を示す斜視図、第５図は本発明の第３の実施例を示
す斜視図、第６図は本発明の第４の実施例を示す斜視
図、第７図〜第９図はそれぞれ従来の伝送線路アンテナ
の一例を示す斜視図である。 図において、1:接地導体板、2:放射導体素子、3:同軸給
電線、4:短絡ピン、5:短絡板、6:誘電体板、7:給電線、
8:給電点、9:付加導体板、10:短絡導体、11:支持台、1
2:板状放射導体素子、13〜17:曲線、18:誘電体。FIG. 1 is a perspective view showing a first embodiment of the present invention, FIG. 2 is a view showing a return loss characteristic of the above embodiment, FIG. 3 is a view showing a gain characteristic of the above embodiment, and FIG. FIG. 5 is a perspective view showing a second embodiment of the present invention, FIG. 5 is a perspective view showing a third embodiment of the present invention, FIG. 6 is a perspective view showing a fourth embodiment of the present invention, and FIG. ~ Fig. 9 is a perspective view showing an example of a conventional transmission line antenna. In the figure, 1: ground conductor plate, 2: radiating conductor element, 3: coaxial feed line, 4: short-circuit pin, 5: short-circuit plate, 6: dielectric plate, 7: feed line,
8: feeding point, 9: additional conductor plate, 10: short-circuit conductor, 11: support base, 1
2: Plate-shaped radiating conductor element, 13 to 17: curved line, 18: dielectric.
Claims (4)
た板状放射導体素子と、該板状放射導体素子の周辺部の
一点を接地導体に接続する短絡ピンを備え、前記板状放
射導体素子に一定間隔で対向して配置された付加導体板
と、該付加導体板の周辺部の１点を対向する前記板状放
射導体素子の１点に接続する短絡導体とを備えて、前記
板状放射導体素子または付加導体板のいずれか一方に給
電するように構成したことを特徴とする広帯域伝送線路
アンテナ。1. A plate-shaped radiating conductor element arranged facing a ground conductor plate at regular intervals, and a short-circuit pin for connecting one point of a peripheral portion of the plate-shaped radiating conductor element to a ground conductor. An additional conductor plate arranged to face the radiation conductor element at regular intervals, and a short-circuit conductor connecting one point of the peripheral portion of the additional conductor plate to one point of the plate-shaped radiation conductor element facing each other, A wideband transmission line antenna configured to feed power to either the plate-shaped radiating conductor element or the additional conductor plate.
路アンテナにおいて、前記板状放射導体素子と接地導体
板の間および又は前記付加導体板との間に誘電体を介在
させたことを特徴とするもの。2. The wideband transmission line antenna according to claim 1, wherein a dielectric is interposed between the plate-shaped radiation conductor element and the ground conductor plate and / or between the additional conductor plate. What to do.
広帯域伝送線路アンテナにおいて、前記付加導体板およ
び又は前記板状放射導体素子には、１つ以上の切込みが
形成されたことを特徴とするもの。3. The broadband transmission line antenna according to claim 1, wherein one or more notches are formed in the additional conductor plate and / or the plate-shaped radiating conductor element. What is characteristic.
載の広帯域伝送線路アンテナにおいて、前記板状放射導
体素子を接地導体板に接続する短絡ピンは、前記板状放
射導体素子の角部に切込みを入れて該切込み部を曲折し
て形成され、前記付加導体板と板状放射導体素子を接続
する短絡導体は前記付加導体板の角部に切込みを入れ該
切込み部を曲折して形成されたことを特徴とするもの。4. The wideband transmission line antenna according to claim 1, wherein the short-circuit pin connecting the plate-shaped radiating conductor element to the grounding conductor plate is provided in the plate-shaped radiating conductor element. A short-circuit conductor that is formed by making a cut in a corner and bending the cut, and connecting the additional conductor plate and the plate-shaped radiation conductor element, makes a cut in the corner of the additional conductor plate and bends the cut. It is characterized by being formed by.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16269084A JPH0669122B2 (en) | 1984-08-01 | 1984-08-01 | Wideband transmission line antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16269084A JPH0669122B2 (en) | 1984-08-01 | 1984-08-01 | Wideband transmission line antenna |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6141205A JPS6141205A (en) | 1986-02-27 |
| JPH0669122B2 true JPH0669122B2 (en) | 1994-08-31 |
Family
ID=15759445
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16269084A Expired - Lifetime JPH0669122B2 (en) | 1984-08-01 | 1984-08-01 | Wideband transmission line antenna |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0669122B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102800928A (en) * | 2011-05-27 | 2012-11-28 | 三星电子株式会社 | Antenna structure and electronic device including the antenna structure |
Families Citing this family (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1263745A (en) * | 1985-12-03 | 1989-12-05 | Nippon Telegraph & Telephone Corporation | Shorted microstrip antenna |
| JPH0659009B2 (en) * | 1988-03-10 | 1994-08-03 | 株式会社豊田中央研究所 | Mobile antenna |
| JP2580505B2 (en) * | 1988-08-10 | 1997-02-12 | 郵政省通信総合研究所長 | Small microstrip antenna |
| JPH03263903A (en) * | 1989-04-28 | 1991-11-25 | Misao Haishi | Miniature antenna |
| DE4203792A1 (en) * | 1992-02-10 | 1993-08-12 | Bayer Ag | IMPROVED METHOD FOR PRODUCING OPTIONALLY SUBSTITUTED BENZALDEHYDES |
| DE69331989T2 (en) * | 1992-12-07 | 2003-01-16 | Ntt Mobile Communications Network Inc., Tokio/Tokyo | antenna device |
| FR2709878B1 (en) | 1993-09-07 | 1995-11-24 | Univ Limoges | Monopolar wire-plate antenna. |
| JP3639966B2 (en) * | 1995-07-20 | 2005-04-20 | カシオ計算機株式会社 | Antenna for portable radio equipment |
| FR2752646B1 (en) * | 1996-08-21 | 1998-11-13 | France Telecom | FLAT PRINTED ANTENNA WITH SHORT-LAYERED ELEMENTS |
| US5945950A (en) * | 1996-10-18 | 1999-08-31 | Arizona Board Of Regents | Stacked microstrip antenna for wireless communication |
| FI112984B (en) * | 1999-10-20 | 2004-02-13 | Filtronic Lk Oy | Internal antenna |
| CN1386312A (en) * | 2000-08-04 | 2002-12-18 | 松下电器产业株式会社 | Antenna device and wireless communication device using the antenna device |
| FR2825837B1 (en) * | 2001-06-12 | 2006-09-08 | Cit Alcatel | MULTIBAND COMPACT ANTENNA |
| JP2005269301A (en) * | 2004-03-19 | 2005-09-29 | Nec Corp | Built-in antenna and electronic equipment having the same |
| KR100688648B1 (en) | 2005-12-30 | 2007-03-02 | 아로 주식회사 | Multiband internal antenna for mobile communication terminal using short stub |
| WO2015029235A1 (en) | 2013-08-30 | 2015-03-05 | 富士通株式会社 | Antenna device |
| WO2015079407A1 (en) * | 2013-11-27 | 2015-06-04 | Green Star Hi-Tech Electronics (Pty) Ltd | Antenna |
| US10522915B2 (en) * | 2017-02-01 | 2019-12-31 | Shure Acquisition Holdings, Inc. | Multi-band slotted planar antenna |
| JP7247614B2 (en) * | 2019-01-31 | 2023-03-29 | 富士通株式会社 | Antenna device and wireless communication device |
| JP7514665B2 (en) * | 2020-06-26 | 2024-07-11 | 京セラ株式会社 | Antenna elements and array antennas |
-
1984
- 1984-08-01 JP JP16269084A patent/JPH0669122B2/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102800928A (en) * | 2011-05-27 | 2012-11-28 | 三星电子株式会社 | Antenna structure and electronic device including the antenna structure |
| US9123994B2 (en) | 2011-05-27 | 2015-09-01 | Samsung Electronics Co., Ltd. | Antenna structure |
| CN102800928B (en) * | 2011-05-27 | 2017-05-03 | 三星电子株式会社 | Antenna structure and electronic device comprising the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6141205A (en) | 1986-02-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH0669122B2 (en) | Wideband transmission line antenna | |
| US7843389B2 (en) | Complementary wideband antenna | |
| JP3085524B2 (en) | Dipole antenna with reflector | |
| KR100283459B1 (en) | 2-frequency resonant antenna device | |
| US6930642B2 (en) | Compact multiband antenna | |
| US6606067B2 (en) | Apparatus for wideband directional antenna | |
| US6606071B2 (en) | Multifrequency antenna with a slot-type conductor and a strip-shaped conductor | |
| EP0631343A1 (en) | Microstrip patch antenna array | |
| JPH03253106A (en) | car antenna | |
| KR100616545B1 (en) | Multi-band laminated chip antenna using double coupling feeding | |
| JPH08181532A (en) | Omnidirectional antenna | |
| US20030103015A1 (en) | Skeleton slot radiation element and multi-band patch antenna using the same | |
| JP3114836B2 (en) | Printed dipole antenna | |
| US6836246B1 (en) | Design of single and multi-band PIFA | |
| JPH1168453A (en) | Composite antenna | |
| JP4516246B2 (en) | antenna | |
| JPH0344443B2 (en) | ||
| JPS6356731B2 (en) | ||
| JPH05347511A (en) | Planar antenna | |
| JP3320107B2 (en) | Broadband two dipole antenna | |
| JP2592128Y2 (en) | Flat antenna | |
| JP2017038123A (en) | Multiple frequency antenna device | |
| JPH02113706A (en) | Antenna system | |
| KR100681329B1 (en) | Multiband Inbuilding Antenna Device for Mobile Communication | |
| JPH1141026A (en) | Planar antenna |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |